MM planning for HiLumi-LHC L. Fiscarelli M. Buzio, O. Dunkel, T. Zickler 4 March 2015

Introduction  Tentative planning of MM tools required for HL-LHC  WP3 IR Magnets  WP11 11-T dipole  Based on the information collected so far  Official MM requests (MQXF)  Other communications  Some technical information is missing  Only required systems (or sub-systems) considered  Manpower not included  Budget not included  It is a first iteration, has to be approved

Measurement techniques for SC magnets  At ambient temperature (warm)  Rotating coils (TF, multipoles, magnetic angle, magnetic center)  AC mole (magnetic axis, cold bore geometrical axis)  Single Stretched Wire in AC mode (TF, magnetic angle, magnetic axis)  At cryogenic temperature (cold)  Without anti-cryostat  Rotating coils (TF, multipoles)  With anti-cryostat  Rotating coils (TF, multipoles, magnetic angle, magnetic center)  Single Stretched Wire in DC mode (TF, magnetic angle, magnetic axis)  Hall-probe based systems (local field, fast transients, polarity check)  Quench antennas  Measurements on materials

Magnet families  MBH 11-T  MQXF Q1/Q3  MQXF Q2  MCBX A/B  MBXF D1  MCBCR D2  MQYY Q4  HO correctors  MCBRB

MBH (11 T) – WP11 For 2-m long models:  1 warm mole + spares already in production  2 shafts + spares for vertical cryostat already in production  New acquisition system + motors for MM at cold For prototypes and series  New complete system (long bench + new shaft) for MM at warm  Reuse of existing ceramic shafts for MM at cold  Anti-cryostat required  Measurements with SSW (TF, angle)?  Cold bore geo-magnetic measurements (AC-mole)?

MQXF Q1/Q3  MM done elsewhere  No MM system is required

MQXF Q2 For 2-m long models:  At warm  Sliding mole R x3 mm  At cold  Shaft R45 – 420x5 mm For prototypes and series magnets:  At warm  Sliding bench like the one in 927?  Magnetic axis measurements?  At cold new shafts (complete system)  SSW measurements (gradient, angle, axis)?  Anti-cryostat? Measurement radius of 45 mm suitable for R ref of 60 mm ?

MCBX For MCBXA prototype and series magnets  At warm  Sliding bench like the one in 927 to be sent in Spain ???  At cold  New shaft for vertical cryostat  Back-up solution shaft R45 – 420x5 mm For MCBXB series magnets  At warm  Same as MCBXA  At cold  New shaft for vertical cryostat Required accuracy on TF? Do we need anti-cryostat?

MBXF  MM done elsewhere  No MM system is required

MCBCR D2 For the model  Why not measure the model at CERN ?  One shaft for warm and cold (?) or two systems? For the prototype and series magnets  At warm  A new complete system to be sent to industry  At cold  New shafts R40 (multi-segment)  Anti-cryostat

MQYY For one-aperture model  At warm  R30 mole + existing sliding bench  At cold  New shafts + system to CEA For two-aperture model  At warm  New shaft + sliding system to industry  At cold  Same as before For series magnets  At warm  Same as model  At cold  New shafts 4.1-m long to CEA  SSW? Axis? Required accuracy on TF? Do we need anti-cryostat?

Correctors  A complete system (2-m long R60 shaft + motor + acquisition system) to INFN  No MM at warm  Several magnets in the same run?  No MM in the final assembly?

MCBRB For the prototype  At warm  Existing sliding system  At cold  New shafts R40 vertical. Required accuracy? For series  At warm  No measurement? Otherwise system to industry  At cold  Same as proto

Putting it all together

Timeline

Conclusions  Many different magnet families  Different MM systems  Large number of coils to be produced, calibrated, assembled  Large diameter shafts  Our calibration dipole is a limitation  New calibration devices  Systems to be sent outside CERN  Integration studies  Commissioning  Training of operators  Reliability  Some points to be assessed  Measurements with SSW (11-T and MQXF) ?  Fiducialization ?  Geomagnetic measurements (AC-mole) ?  Anti-cryostat for MQXF series ?  Required accuracy for magnets tested only in vertical (MCBX) ?